Qn1. Which principles of preservation are applied in the following?
1. A tin of condensed milk.
2. A tin of milk powder.
3. A carton of milk
4. A 1litre bottle of Al Rawabi milk from the supermarket
Answers
1- Condensed milk is a thick milk formed after the evaporation of milk, with high sugar content. This milk is heated at high temperature to evaporate all the water content from it, cooled it down at a lo temperature and and then stored it in cans.
2- Milk is pasteurized and then passed through an evaporator to dry up the water content from it and then sprayed through a heating chamber, where all water content evaporates and converted into fine powder. This powder is stored in boxes to avoid light and air contact.
3- Milk is pasteurized at a temperature less than 100 degree and then cooled down at a very low temperature and then stored in air tight boxes. Once these boxes are opened for use, make sure they are used under the expiration period given on the box.
4-This milk is pasteurized at a temperature less than 100 degree and stored in bottles after cooling it down. The same rule applies to it. Use it under the date given on the bottle
1- Condensed milk is basically a thick milk formed after the evaporation of milk, with high sugar content. This milk is heated at high temperature to evaporate all the water content from it, cooled it down at a low temperature and and then stored it in cans.
2- Milk is pasteurized and then passed through an evaporator to dry up the water content from it, then sprayed through a heating chamber, where all water content evaporates and converted into fine powder. This powder is stored in air tight boxes to avoid light and air contact.
3- Milk is pasteurized at a temperature less than 100 degree and then cooled down at a very low temperature and then stored in air tight box. Once these boxes are opened for use, make sure they are used under the expiration period given on the box.
4-This milk is pasteurized at a temperature less than 100 degree and stored in bottles after cooling it down. The same rule applies to it. Use it under the date given on the bottle.